Open to opportunities

Matthew User

@matthewuser

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Senior Software Engineer with expertise in high-performance web applications.

United States

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What I'm looking for

I am looking for a role that challenges me technically and allows for mentorship opportunities while fostering innovation and collaboration.

As a Senior Software Engineer with 9 years of experience, I specialize in building high-performance web applications using modern technologies like React/Next.js and Node.js/Nest.js. My journey has taken me through significant roles at Fortune 500 companies, where I have consistently delivered impactful solutions that enhance user experience and drive business results.

At eBay, I led the redesign of the Seller Hub, implementing innovative features that improved SEO and performance, while also architecting a robust backend to streamline API interactions. My work in optimizing full-stack performance has resulted in substantial cost savings and efficiency improvements. I am passionate about mentoring teams and modernizing legacy systems, ensuring that technology serves as a catalyst for growth and innovation.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

eBay

Jul 2019 - Present (5 years 11 months)

Led the redesign of eBay’s Seller Hub using React/Next.js, improving SEO and performance. Architected a Nest.js BFF layer, integrated GraphQL, and designed a Kafka-based event-driven architecture. Migrated legacy systems to Node.js microservices and optimized CI/CD pipelines, significantly enhancing scalability and performance.

Next.js Nest GraphQL Kafka AWS Docker CI CD TypeScript Node Performance Optimization

Full Stack Developer

Ahold Delhaize

Jan 2015 - Jul 2019 (4 years 6 months)

Developed a React/Redux dashboard for inventory tracking, modernized legacy interfaces, and built Node.js middleware for real-time pricing data synchronization. Created AWS Lambda functions for dynamic pricing adjustments and rewrote a monolithic order management system to support high order volumes.

React Redux Node AWS PostgreSQL RabbitMQ Performance Optimization